Hydraulic valve lifter



March 17, 1936.

K. D. JACKSON 2,034,142 HYDRAULIC VALVE LIFTER Filed June 5, 1935 2 Sheets-Sheet l Inventor A enne7% D. rfacy son HYDRAULIC VALVE LIFTER 2 Sheets-Sheet 2 Filed June 5, 1935 1 m h hm mm wm NM w vvm. H h\w\ Mv mo 9m m Q m mw RN a s w m N mw i N m 2 v M & ww w a i MN 32 M w wmmw Patented Mar. 17, 1936 U N l T E D STATE PATELN T OF Fl CE 2,034,142 HYDRAULIC vALvE LIFTER. 'Kenneth iD. Jackson, .Utica, N. Y. Application June 5, 1935, Serial No. 25,163 2 Claims. (01. 29-863) This invention appertains to new and useful These arms extend through the lower yoke l4 improvements in valve lifters for conveniently of the spreader l3 and have straight extending lifting the valves of the type generally employed portions IT at their outer ends adjustably conin internal combustion engines. nected together by a screw l8 and which under- 5 The principal object of the present invention lies the yoke portion d. 5 is to provide a hydraulic valve lifter which will A coiled compressible spring 19 is convoluted eliminate a considerable amount of the manual on the connecting rod H and interposed between exertion necessary in compressing the valve the plunger 9 and the bushing l9, thus maintainspring. ing the plunger 9 in retracted position with the 10 Other important objects and advantages of the ends ll of the arms and the yoke portion (1 of the 10 invention will become apparent to the reader of upper arms in the contracted relation shown in the following specification. Figure 3.

In the drawings: A threaded bore 20 receives the threaded valve Figure 1 represents a perspective view of the shell 2! which has a portion communicating with lifter. the duct 22 leading to the hollow handle tank 15 Figure 2 represents a rear elevational view of and another port registering with the duct 23 the spreader. which extends upwardly from the cylinder 24. A Figure 3 represents a longitudinal sectional valve element 25 can be threaded into the shell View through the lifter. 2| to either close or communicate the .duct 23 2Q Figure 4 represents a fragmentary top plan with the duct 22. A branch duct from the duct view of the yoke ends of the upper pair of arms. 23 communicates with the cylinder 8 as at 26 and Referring to the drawings wherein like nuanother branch duct 21 extends from the duct merals designate like parts it can be seen that 23 to the hollow handle 6 and has a check valve the numeral 5 represents a block construction 28 therein. An additional check valve 29 is proprovided with a removable hollow cylindrical exvided between the branch duct 26 and the duct 23. 25 tension 6 forming a handle. The bottom of this Operative in the cylinder 24 is a plunger 30 hollow handle 6 can be opened to permit the which is slidable through the packing gland 3| handle to be filled with oil or like substance by at the lower end thereof. A depending post 32 on removing the plug 1. the body 5 extends into the bifurcated edge por- 30 Extending forwardly from the body 5 is the tion 33 of the lever 34 and a pin 35 pivotally con- 30 cylinder 8 in which the plunger 9 is slidable. nects the handle at this point to the post 32 while The forward edge of this cylinder 8 is provided a link connection 36 is established between the with a removable threaded bushing l0 through bifurcated end of the lever 34 and the said which the connecting rod ll of the plunger 9 is plunger 30.

35 slidable. Secured by a screw or like means l2 at It can now be seen, that normally a volume of 35 the outer end of the rod II is the cross bar l3 oil is in the cylinder 24 and when the lever 34 is serving as a spreader for the upper and lower moved upwardly the plunger 30 forces the conpair of arms, this spreader l3 being slotted at tents of the cylinder 24 upwardly through the its upper and lower ends as at M. Springs 14a duct 23, passing check valve 29 and into the 40 serve to prevent rattling of the arms. The upchamber 8 where it exerts a stop against the 40 per pair of arms consist of two elongated bars plunger 9 and forces the spreader l3 outwardly being bent at the inner portion to describe a subto separate the yoke d of the upper arm and the stantially L-formation a-b while the forward extension I! of the lower arm. end portion is diverged upwardly slightly as at 0 Obviously when the handle 34 is released, the

where it ends at a semi-circular half-yoke d spring 19 will return the plunger 9 driving the 45 having an upstanding flange 6 at its outer edge. fiuid back through the valve shell 2|. Of course The yoke end of these arms are adjustably conthe valve 25 must be open .or otherwise the arms nected together by a screw l5. will be maintained in separated position. This An ear I6 on the top portion of the body 5 has valve 25 serves as a lock for the fluid until it is the inner end of the upper pair of arms pivotally opened and then it returns to the handle 6 and 50 secured thereto by suitable members H. The then from the handle 6 back tothe check valve lower arms are similarly formed at their inner 28 to the cylinder 24. This latter operation genportions to follow a general L-formation a--b erally takes place when the handle 34 is first and these arms at their inner ends are pivotally moved downwardly to fill the chamber 24 with secured to opposite sides of the block 5 as at 16. fluid. 55

While the foregoing specification sets forth the invention in specific terms, it is to be understood that numerous changes in the shape, size and materials may be resorted to without departing from the spirit and scope of the invention claimed hereinafter.

Having thus described the invention, what is claimed as new is:

1. A valve lifter comprising a hollow handle for containing a fluid, a cylinder extending from the said hollow handle and a passageway between the hollow handle and the cylinder provided with a valve therein, a plunger in the said cylinder, an upper and lower pair of valve spring engaging arms, a spreader carried by the said plunger for spreading the said arms apart when the spreader is extended, and manual means for driving fluid into the cylinder for extending the said plunger.

2. A valve lifter comprising a hollow handle for containing a fluid, a cylinder extending from the said hollow handle and a passageway between the hollow handle and the cylinder provided with a valve therein, a plunger in the said cylinder, an upper and lower pair of valve spring engaging arms, a. spreader carried by the said plunger for spreading the said arms apart when the spreader is extended, manual means for driving fluid into the cylinder for extending the said plunger, and a check valve between said cylinder and manual means so as to hold the arms in extended position until the first mentioned valve is moved to open position.

KENNETH D. JACKSON. 

